When will be support for python 3.13 released?

[synergiator]

• Feature to support python 3.13 was merged Oct 2024
• However recent release was in Apr 2024

[nicoddemus]

I guess we can make a new release, but I'm curious, does the current release not work on 3.13?

#1142 did not change anything other than the classifiers, from the package POV.

[synergiator]

thanks a lot for the update and the release @nicoddemus !
indeed though I have to apologize - the code works as you said also with python 3.13 / xdist 3.6.1 - I could not reproduce the error I had.

(venv) $ pytest -n 4 tests/
=== test session starts ===
platform linux -- Python 3.13.3, pytest-8.3.5, pluggy-1.6.0
rootdir: <....>
configfile: pytest.ini
plugins: xdist-3.6.1, anyio-4.9.0
4 workers [8 items]  

Here sample code to do isolated compatibility testing:

bash script

#!/bin/bash

set -e

build_and_run() {
  local PYTHON_VERSION="$1"
  local PYTEST_XDIST_VERSION="$2"
  local TAG="tests:${PYTHON_VERSION}_${PYTEST_XDIST_VERSION}"

  echo "Building image: $TAG"
  docker build --no-cache \
    --build-arg PYTHON_VERSION="${PYTHON_VERSION}" \
    --build-arg PYTEST_XDIST_VERSION="${PYTEST_XDIST_VERSION}" \
    -t "${TAG}" .

  echo "Running container: $TAG"
  docker run -it "${TAG}"
}

# Run tests
build_and_run "3.13.3-slim" "3.6.1"
build_and_run "3.13.3-slim" "3.7.0"
build_and_run "3.12.10-slim" "3.6.1"
build_and_run "3.12.10-slim" "3.7.0"

Dockerfile

# syntax=docker/dockerfile:1.4

###############################################################################
# 1. Build arguments (with sane defaults) *declared before* the FROM line.
###############################################################################
ARG PYTHON_VERSION=3.12-slim          # e.g. 3.10-slim-bookworm, 3.11.9-alpine …
ARG PYTEST_XDIST_VERSION=""           # empty ⇒ latest published on PyPI

###############################################################################
# 2. Use the Arg in the base-image reference. Requires BuildKit-enabled Docker.
###############################################################################
FROM python:${PYTHON_VERSION}

# 3. Re-declare any ARG you still need **after** the FROM so it is in scope.
ARG PYTEST_XDIST_VERSION

###############################################################################
# 4. Install PyTest and the requested (or latest) xdist.
###############################################################################
RUN set -eux; \
    echo "Python version: $(python --version)"; \
    echo "Installing PyTest and pytest-xdist ${PYTEST_XDIST_VERSION}"; \
    if [ -z "${PYTEST_XDIST_VERSION}" ]; then \
        pip install --no-cache-dir pytest pytest-xdist; \
    else \
        pip install --no-cache-dir pytest "pytest-xdist==${PYTEST_XDIST_VERSION}"; \
    fi

###############################################################################
# 5. Prepare a tiny demo test-suite.
###############################################################################
WORKDIR /tests
RUN <<'EOF'
cat > test_sample.py <<'EOT'
import time, pytest

@pytest.mark.parametrize("i", range(2))
def test_parallel(i):
    print()
    time.sleep(1)
    print(i)
    assert i < 10
EOT
EOF

###############################################################################
# 6. Default command – run the tests on all available CPU cores.
###############################################################################
CMD ["pytest", "-n", "auto"]